Title :
Waveform optimization for OQAM-OFDM systems by using nonlinear programming algorithms
Author :
Chen, H.H. ; Cai, X.D.
Author_Institution :
Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung, Taiwan
Abstract :
This paper deals with the issues on the optimization of transmitter and receiver FIR filters in the orthogonal frequency division multiplex (OFDM) system with offset QAM modulation. The filters have their responses overlapped in both the time and the frequency domains. The transmitter and receiver filters satisfy the constraints minimizing the interchannel and intersymbol interference and are optimized by using nonlinear programming procedures. Two different objective functions in the frequency domain are used: the least square error (LSE) in the stop-band and minimizing the maximum magnitude (mini-max) in the stop-band
Keywords :
FIR filters; circuit optimisation; error analysis; filtering theory; frequency division multiplexing; frequency-domain analysis; intersymbol interference; least squares approximations; minimax techniques; nonlinear programming; quadrature amplitude modulation; receivers; time-domain analysis; transmitters; OQAM-OFDM systems; bandlimited signals; frequency domain; interchannel interference; intersymbol interference; least square error; maximum magnitude minimization; mini-max method; nonlinear programming; nonlinear programming algorithms; objective functions; offset QAM modulation; orthogonal frequency division multiplex; receiver FIR filters; stop-band; transmitter FIR filters; waveform optimization; Constraint optimization; Finite impulse response filter; Frequency division multiplexing; Frequency domain analysis; Interference constraints; Intersymbol interference; Least squares methods; OFDM modulation; Quadrature amplitude modulation; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.605436
